Improvement in louver-ventilators



J. F. STARR, Jr. Louvre-Ventilator.

Paten ted April 23,1878.

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UNITED STATES PATENT QFFIGE.

JOHN F. STARR, JR., OF CAMDEN, NEW JERSEY.

IMPROVEM ENT IN LOUVER-VENTI LATO RS.

Specification forming part of Letters Patent No. 202,765, dated April23, 1878; application filed March 11, 1878.

To all whom it may concern:

Be it known that I, JOHN F. STARR, Jr., of the city and county ofCamden, in the State of New Jersey, have invented certain new and usefulImprovements in Louver-Ventilators, of which the following is aspecification:

The object of my invention is to provide a ventilator of the louver orslatted class for use upon buildings, railway-cars, 850., which, whileproviding ample facilities for the passage of fresh air, willeffectually prevent the entrance of rain, snow, cinders, or otherforeign matters; to which end my improvements consist in the combinationof a supporting case or frame, a series of inclined slats or partitionsextending across the same, and deflecting-plates interposed between thepartitions, so as to intercept foreign matters while admitting of thepassage of air between the partitions, as hereinafter more fully setforth.

In the accompanying drawings, Figure 1 is a front view of a ventilatorembodying my improvements, a portion of one of the partitions beingbroken away to show the construction more clearly; Fig. 2, a transversesection of the same at the line .70 00 of Fig. 1, and Fig.3, alongitudinal section through the same at the line y y of Fig. 2.

To carry out my improvements, I provide a case or frame, A, which may beof any desired form and dimensions, and which,like the remainder of theapparatus, is preferably made of light sheet metal. A series of slats orpartitions, A, extends completely across the case A, the partitionsbeing upwardly-inclined from front to rear of the same, and set at theproper distance apart to admit of the passage of an upward current ofair between them. Each of the partitions A except the lowermost isprovided with a flange or deflectin g-plate, a, extending downwardlyfrom its front edge for the major portion of the distance between it andthe adjacent partition, and an angular deflecting-plate, a, is formed onor secured to the upper edge of each of said partitions except theuppermost. The deflecting-plates a rise vertically from the tops of thepartitions, and are then inclined outwardly and downwardly, theperpendicular distance between the outer edge of each plate a and thepartition to which it is connected being slightly greater than theperpendicular distance between said partition and the lower edge of thedownward flange a of the partition next above it.

A downwardly and slightly rearwardly i11- clined deflectingplate, a issecured upon the lower side of each partition A except the lowest,projecting below the upper edge of the plate a of the next lowestpartition, and leav ing a clear open space between itself and saidplate, and an outward and downwardly inclining plate, a, is secured toeach of the par titions A, starting at or about its upper edge, andextending outwardly beyond the lower edge of the plate a of thepartition next above it, open space being left for the entire length ofthe partitions between the plates of and a".

In order to prevent the formation of a deadair space below the plates atheir outer edges may be connected by vertical plates at with theirrespective partitions, and circulation of air beneath them is providedby forming a series of openings, a in the plates or, and a similarseries of openings, to", in the plates a the openings a and a beingalternated in position respectively, so that the solid portion of one ofthe plates is opposite to the open portion of the other.

It will be observed that in the construction of the ventilator freepassage of an upward current of air is provided between every twoadjacent partitions, while, by the interposition of the intermediatedeflecting-plates, water, sparks, or other matters which may strike theoutside are prevented from being carried through by or with the draft ofair.

I claim as my invention, and desire to secure by Letters Patent- Thecombination, in a ventilator, of a sup-

